NEET BIOLOGY

Detailed explanation-1: -Hydathode is a plant organ responsible for guttation in vascular plants, i.e. the release of droplets at leaf margin or surface. Because this organ connects the plant vasculature to the external environment, it is also a known entry site for several vascular pathogens.

Detailed explanation-2: -Hydathodes are present on the margins and tips of the leaves. Guttation usually occurs at night when there is very less transpiration. Root pressure is responsible for guttation. Root pressure is created by a well-irrigated plant, this pressure forces water to exude via hydathode in the form of guttation drops.

Detailed explanation-3: -Guttation usually occurs as a consequence of a combination of high root pressure (which may be caused by different factors) and a low evaporation rate/too high humidity. This often occurs just after sunrise when the plant becomes active and the humidity is high.

Detailed explanation-4: -Guttation is the loss of water in the liquid state from uninjured parts of plants, usually from tips and margins of leaves. In this, water exudes from the group of leaf cells called hydathodes. A hydathode is an opening or pores in the leaf epidermis, around, which are grouped as several thin-walled parenchyma cells.